@yossarian_ With the hard drive plugged into the computer directly, can it work well as expected? Is it the first time you use the hard drive with the Archer C1200? Or it was working well earlier?...

@simontaylor As far as I know, we have not recieved such feedback yet. To enhance the security, first please setup a more complicated wireless password and login username and password for this...

@destawala With sim card inserted into the smart phone directly, does it work properly? Meanwhile, try to update the firmware to the latest one and hard reset the router to give it a shot....

@ArtemD May I know how often does this issue happen? What is the actual wifi speed you can get from the TL-WR840N? What about the wired speed? Are they normal compared with the bandwidth you paid for...

@BigD23 For your information, the Archer AX11000 does not support SSH. The firmware can support SSH because we added the support of Tether 2.0. Tether is used to manage and configure routers; to...

@vinoth Try to use access control, it has the same function as the mac filtering. Below is the instruction to set it up. https://www.tp-link.com/support/faq/1724/ May it help.